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Multiple Choice

What kind of analysis creates a layer comprised of intersected or united data?

Overlay analysis is a GIS technique that builds a new data layer by combining the geographic information and attributes from two or more input layers. It looks at how features relate spatially and creates a result where data from the inputs is merged. The key operations are intersection, where only the overlapping areas are kept and carry attributes from both layers, and union, where all areas from the inputs are included with their attributes. This is exactly what creates a layer comprised of intersected or united data—the new layer reflects the combined information from the contributing layers. Proximity analysis measures distance, network analysis handles routes and connectivity, and attribute analysis focuses on examining attribute data rather than merging spatial features.

Overlay analysis is a GIS technique that builds a new data layer by combining the geographic information and attributes from two or more input layers. It looks at how features relate spatially and creates a result where data from the inputs is merged. The key operations are intersection, where only the overlapping areas are kept and carry attributes from both layers, and union, where all areas from the inputs are included with their attributes. This is exactly what creates a layer comprised of intersected or united data—the new layer reflects the combined information from the contributing layers. Proximity analysis measures distance, network analysis handles routes and connectivity, and attribute analysis focuses on examining attribute data rather than merging spatial features.